You get some bland pumpkin slices from inside your barbarian backpack.You get some savory simple dough from inside your barbarian backpack.>make muffYou furiously work with your materials at the stove and are able to produce a burnt pumpkin muffin for your efforts.You glance down and see that you have a burnt pumpkin muffin in your right hand and nothing in your left hand.

The simple dough in your right hand is not currently involved in any crafting recipes.

When you make a pumpkin muffin, it changes in appearance, but not in code.